It’s not about being pampered or shielded from the world. There is a difference between a) being challenged, being put into competitive environments, and having access to a wide range of experiences and b) having negative childhood events or trauma.

You are moving the goalpost. The whole comment thread is about how humans that had a harder upbringing could be more resilient to mental breakdown for long-term interplanetary colonization. A cat would not be a relevant organism to study to answer this question.